Question

Short note on modern period rable

Answer 1

Modern periodic table states that physical and chemical properties of an element are the periodic function of their atomic number.
There are cause of periodicity Are the recurrence of similar properties of the elements after certain regular intervals when they are arranged in the order of increasing atomic number is called peridiocity..
Periodicity is of 2,8,8,18,18,32 .
In the modern periodic tab,e elements are arranged in the increasing order of there atomic number.